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1. 发明授权

US07171610B2 Method, system, and article of manufacture for preventing data loss 有权
标题翻译：防止数据丢失的方法，系统和制造
公开(公告)号：US07171610B2
公开(公告)日：2007-01-30
申请号：US10170666
申请日：2002-06-12
申请人： Kevin John Ash , Michael Thomas Benhase , Carol Santich Mellgren , Brian Anthony Rinaldi , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Carol Santich Mellgren , Brian Anthony Rinaldi , Kenneth Wayne Todd
IPC分类号： G06F11/26 , G06F11/36
CPC分类号： G06F11/1666 , G06F11/0727 , G06F11/079 , G06F11/20
摘要： Provided are a method, system, and an article of manufacture for preventing data loss. Modified data is stored in a volatile storage. The stored modified data is copied onto a non-volatile storage. A determination is made as to whether the non-volatile storage should be checked for errors. In certain implementations, on determining that the nonvolatile storage should be checked for errors the non-volatile storage is checked for errors. If on checking the non-volatile storage is found to have an error, an indication of the error is provided.
摘要翻译：提供了一种用于防止数据丢失的方法，系统和制品。修改后的数据存储在易失性存储器中。存储的修改数据被复制到非易失性存储器上。确定是否应检查非易失性存储器的错误。在某些实现中，在确定应该检查非易失性存储器的错误时，检查非易失性存储器的错误。如果检查非易失性存储器发现有错误，则提供错误的指示。

2. 发明授权

US07051174B2 Method, system, and program for restoring data in cache 有权
标题翻译：缓存中恢复数据的方法，系统和程序
公开(公告)号：US07051174B2
公开(公告)日：2006-05-23
申请号：US10255026
申请日：2002-09-24
申请人： Kevin John Ash , Vernon J. Legvold , Steven Robert Lowe , David Frank Mannenbach , Carol Santich Mellgren , Kenneth Wayne Todd , William Dennis Williams
发明人： Kevin John Ash , Vernon J. Legvold , Steven Robert Lowe , David Frank Mannenbach , Carol Santich Mellgren , Kenneth Wayne Todd , William Dennis Williams
IPC分类号： G06F12/02
CPC分类号： G06F11/1666 , G06F11/20 , G06F11/2089 , Y10S707/99953 , Y10S707/99955
摘要： Provided are a method, system, and program for maintaining data in a first cache and second cache, wherein a backup cache maintains a backup copy of data in the first cache, and wherein the first cache is used to cache a first set of data in a storage system and the second cache is used to cache a second set of data in the storage system. An unavailable state of the first cache is detected. In response to detecting the unavailable state, requests to the first set of data are blocked and at least one space in the second cache is allocated for data in the backup cache. Requests to the first set of data are allowed to proceed after the at least one space is allocated in the second cache and before the data in the backup cache is copied to the at least one allocated space in the second cache. The data from the backup cache is copied to the allocated at least one space in the second cache after the requests to the first set of data are allowed to proceed.
摘要翻译：提供了一种用于在第一高速缓存和第二高速缓存中维护数据的方法，系统和程序，其中备份高速缓存维护第一高速缓存中的数据的备份副本，并且其中第一高速缓存用于高速缓存第一组数据存储系统和第二高速缓存用于在存储系统中缓存第二组数据。检测到第一个缓存的不可用状态。响应于检测不可用状态，阻止对第一组数据的请求，并且为备份高速缓存中的数据分配第二高速缓存中的至少一个空间。允许在第二高速缓存中分配至少一个空间之后并且在将备份高速缓存中的数据复制到第二高速缓存中的至少一个分配的空间之前对第一组数据进行请求。在对第一组数据的请求被允许继续之后，来自备份高速缓存的数据被复制到第二高速缓存中分配的至少一个空间。

3. 发明授权

US07895465B2 Memory preserved cache failsafe reboot mechanism 失效
标题翻译：内存保存缓存失效安全重启机制
公开(公告)号：US07895465B2
公开(公告)日：2011-02-22
申请号：US12132128
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F11/00
CPC分类号： G06F11/1417 , G06F11/2092
摘要： A method, system and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster, the surviving cluster undergoing a rebooting process, is provided. A memory preserved indicator associated with a cache of the surviving cluster is detected. The memory preserved indicator designates marked tracks having an image in an NVS of the failed cluster to be preserved through the rebooting process. A counter in a data structure of the surviving cache is incremented. If a value of the counter exceeds a predetermined value, a cache memory is initialized, and the marked tracks are removed from the cache to prevent an instance of repetitive reboots caused by a corrupted structure in the cache memory.
摘要翻译：提供了一种方法，系统和计算机程序产品，用于通过从故障集群到存活集群的故障转移来保存具有双高速缓存和双非易失性存储（NVS）的存储子系统中的数据，所述经历重新启动过程的存活集群。检测与存活簇的高速缓存相关联的存储器保存的指示符。存储器保存的指示符指定在通过重新启动过程保留的故障集群的NVS中具有图像的标记轨迹。幸存缓存的数据结构中的计数器增加。如果计数器的值超过预定值，则初始化高速缓冲存储器，并且从高速缓存中移除标记的轨道，以防止由高速缓冲存储器中的破坏的结构导致的重复重新启动的实例。

4. 发明授权

US08832379B2 Efficient cache volume SIT scans 有权
标题翻译：高效缓存卷SIT扫描
公开(公告)号：US08832379B2
公开(公告)日：2014-09-09
申请号：US13617130
申请日：2012-09-14
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd
IPC分类号： G06F12/08
CPC分类号： G06F12/0895 , G06F12/0802 , G06F12/0871 , G06F2212/462
摘要： A processor, operable in a computing storage environment, allocates portions of a Scatter Index Table (SIT) disproportionately between a larger portion dedicated for meta data tracks, and a smaller portion dedicated for user data tracks, and processes a storage operation through the disproportionately allocated portions of the SIT using an allocated number of Task Control Blocks (TCB).
摘要翻译：一种在计算存储环境中可操作的处理器，在专用于元数据轨道的较大部分和专用于用户数据轨道的较小部分之间不成比例地分配分散索引表（SIT）的部分，并且通过不成比例地分配使用分配数量的任务控制块（TCB）的部分SIT。

5. 发明授权

US09733991B2 Deferred re-MRU operations to reduce lock contention 有权
公开(公告)号：US09733991B2
公开(公告)日：2017-08-15
申请号：US13616980
申请日：2012-09-14
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd , David Blair Whitworth
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd , David Blair Whitworth
IPC分类号： G06F12/12 , G06F9/52 , G06F12/0866 , G06F12/123 , G06F3/06
CPC分类号： G06F9/526 , G06F3/0659 , G06F12/0866 , G06F12/123
摘要： Data operations, requiring a lock, are batched into a set of operations to be performed on a per-core basis. A global lock for the set of operations is periodically acquired, the set of operations is performed, and the global lock is freed so as to avoid excessive duty cycling of lock and unlock operations in the computing storage environment.

6. 发明申请

US20090300408A1 MEMORY PRESERVED CACHE FAILSAFE REBOOT MECHANISM 失效
标题翻译：内存保存缓存失败机制
公开(公告)号：US20090300408A1
公开(公告)日：2009-12-03
申请号：US12132128
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F11/20
CPC分类号： G06F11/1417 , G06F11/2092
摘要： A method, system and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster, the surviving cluster undergoing a rebooting process, is provided. A memory preserved indicator associated with a cache of the surviving cluster is detected. The memory preserved indicator designates marked tracks having an image in an NVS of the failed cluster to be preserved through the rebooting process. A counter in a data structure of the surviving cache is incremented. If a value of the counter exceeds a predetermined value, a cache memory is initialized, and the marked tracks are removed from the cache to prevent an instance of repetitive reboots caused by a corrupted structure in the cache memory.
摘要翻译：提供了一种方法，系统和计算机程序产品，用于通过从故障集群到存活集群的故障转移来保存具有双高速缓存和双非易失性存储（NVS）的存储子系统中的数据，所述存活集群经历重新启动过程。检测与存活簇的高速缓存相关联的存储器保存的指示符。存储器保存的指示符指定在通过重新启动过程保留的故障集群的NVS中具有图像的标记轨迹。幸存缓存的数据结构中的计数器增加。如果计数器的值超过预定值，则初始化高速缓冲存储器，并且从高速缓存中移除标记的轨道，以防止由高速缓冲存储器中的破坏的结构导致的重复重新启动的实例。

7. 发明申请

US20090300298A1 MEMORY PRESERVED CACHE TO PREVENT DATA LOSS 失效
标题翻译：内存保存缓存以防数据丢失
公开(公告)号：US20090300298A1
公开(公告)日：2009-12-03
申请号：US12132087
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F12/00
CPC分类号： G06F12/0804 , G06F11/1441 , G06F11/1666 , G06F11/2023 , G06F11/2038 , G06F11/2043 , G06F12/0866
摘要： A method, system, and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster is provided. A memory preserved indicator is initiated to mark tracks on a cache of the surviving cluster to be preserved, the tracks having an image in an NVS of the failed cluster. A destage operation is performed to destage the marked tracks. Subsequent to a determination that each of the marked tracks have been destaged, the memory preserved indicator is disabled to remove the mark from the tracks. If the surviving cluster reboots previous to each of the marked tracks having been destaged, the cache is verified as a memory preserved cache, the marked tracks are retained for processing while all unmarked tracks are removed, and the marked tracks are processed.
摘要翻译：提供了一种用于通过从故障集群到存活集群的故障转移来保存具有双缓存和双非易失性存储（NVS）的存储子系统中的数据的方法，系统和计算机程序产品。启动存储器保存的指示符以标记要保留的存活簇的高速缓存上的轨道，轨道在故障集群的NVS中具有图像。执行了一个停船操作，以排除标记的轨迹。在确定每个标记的轨道已经停止之后，禁用存储器保留指示符以从轨道中移除标记。如果幸存的群集在已经去往每个标记的轨道之前重新启动，则将高速缓存验证为存储器保存的高速缓存，标记的轨道被保留用于处理，而所有未标记的轨道被移除，并且标记的轨道被处理。

8. 发明授权

US09396102B2 Recovery from cache and NVS out of sync 有权
公开(公告)号：US09396102B2
公开(公告)日：2016-07-19
申请号：US13617076
申请日：2012-09-14
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd
IPC分类号： G06F12/08 , G06F11/16 , G06F12/02 , G06F11/00 , G06F11/14 , G06F11/20
CPC分类号： G06F12/0238 , G06F11/004 , G06F11/1441 , G06F11/1666 , G06F11/20 , G06F12/0871 , G06F2212/286
摘要： For cache/data management in a computing storage environment, incoming data segments into a Non Volatile Storage (NVS) device of the computing storage environment are validated against a bitmap to determine if the incoming data segments are currently in use. Those of the incoming data segments determined to be currently in use are designated to the computing storage environment to protect data integrity.

9. 发明授权

US07975169B2 Memory preserved cache to prevent data loss 失效
标题翻译：内存保存缓存以防止数据丢失
公开(公告)号：US07975169B2
公开(公告)日：2011-07-05
申请号：US12132087
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F11/00
CPC分类号： G06F12/0804 , G06F11/1441 , G06F11/1666 , G06F11/2023 , G06F11/2038 , G06F11/2043 , G06F12/0866
摘要： A method, system, and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster is provided. A memory preserved indicator is initiated to mark tracks on a cache of the surviving cluster to be preserved, the tracks having an image in an NVS of the failed cluster. A destage operation is performed to destage the marked tracks. Subsequent to a determination that each of the marked tracks have been destaged, the memory preserved indicator is disabled to remove the mark from the tracks. If the surviving cluster reboots previous to each of the marked tracks having been destaged, the cache is verified as a memory preserved cache, the marked tracks are retained for processing while all unmarked tracks are removed, and the marked tracks are processed.
摘要翻译：提供了一种用于通过从故障集群到存活集群的故障转移来保存具有双缓存和双非易失性存储（NVS）的存储子系统中的数据的方法，系统和计算机程序产品。启动存储器保存的指示符以标记要保留的存活簇的高速缓存上的轨道，轨道在故障集群的NVS中具有图像。执行了一个停船操作，以排除标记的轨迹。在确定每个标记的轨道已经停止之后，禁用存储器保留指示符以从轨道中移除标记。如果幸存的群集在已经去往每个标记的轨道之前重新启动，则将高速缓存验证为存储器保存的高速缓存，标记的轨道被保留用于处理，而所有未标记的轨道被移除，并且标记的轨道被处理。

10. 发明授权

US07818533B2 Storing location identifier in array and array pointer in data structure for write process management 失效
标题翻译：将数据和数组指针中的位置标识符存储在写入过程管理的数据结构中
公开(公告)号：US07818533B2
公开(公告)日：2010-10-19
申请号：US12409337
申请日：2009-03-23
申请人： Kenneth Wayne Todd , Kevin John Ash
发明人： Kenneth Wayne Todd , Kevin John Ash
IPC分类号： G06F12/00
CPC分类号： G06F3/0659 , G06F3/0619 , G06F3/0689
摘要： Provided are a method, system, and program for managing write processes in which a list of destination location identifiers for pending write operations is maintained in an array having an array pointer which identifies the next available entry of the array. In one embodiment, the array includes a stack of variable size. Adding a destination location identifier of a pending write operation increases the size of the stack. Removing a destination location identifier of a completed write operation reduces the size of the stack. A stack index may be incremented as write operation destination location identifiers are added and may be decremented as write operation destination location identifiers are removed from the stack.
摘要翻译：提供了一种用于管理写入处理的方法，系统和程序，其中用于待写入操作的目的地位置标识符的列表被维护在具有标识数组的下一个可用条目的数组指针的数组中。在一个实施例中，阵列包括可变大小的堆叠。添加待处理写入操作的目标位置标识符会增加堆栈的大小。删除完成的写入操作的目标位置标识符可以减小堆栈的大小。随着写入操作目的地位置标识符的添加，堆栈索引可以增加，并且可以从堆栈中移除写入操作目的地位置标识符来递减堆栈索引。

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